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Analog Devices Inc./Maxim Integrated MAX4230AXK-T
- Part No.:
- MAX4230AXK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX4230AXK-T.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,452
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Product details
Overview
The MAX4230AXK-T from Maxim Integrated is a single, rail-to-rail input/output CMOS operational amplifier optimized for high-current output drive in portable audio and RF biasing applications. It delivers 200mA peak output current, features 10MHz gain-bandwidth product and 10V/μs slew rate, operates from a single 2.7V to 5.5V supply, and is housed in a 5-pin SC70 package rated for -40°C to +125°C.
For engineers reviewing the MAX4230AXK-T datasheet, MAX4230AXK-T pinout, MAX4230AXK-T application, or MAX4230AXK-T equivalent, this op amp is selected for headset driver stages, RF PA bias control, and low-voltage, high-slew-rate buffer circuits where rail-to-rail swing and capacitive-load stability up to 780pF are required.
Technical Context
The MAX4230AXK-T employs parallel n- and p-channel differential input stages to achieve true rail-to-rail common-mode input range (VSS to VDD), with each stage active across complementary voltage regions. Its output stage supports rail-to-rail swing-guaranteed within 500mV of VDD and 360mV of VSS at 32Ω load-and remains unity-gain stable with capacitive loads ≤780pF.
This device lacks shutdown functionality (confirmed by Selector Guide and Pin Description tables), distinguishing it from the MAX4231/MAX4233 variants. Its quiescent supply current is 1.1mA per amplifier at 2.7V, and it exhibits 85dB PSRR and 70dB CMRR over the full operating temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7V to 5.5V single supply - enables direct integration into 3.3V and 5V battery-powered systems without level-shifting. |
| Gain-Bandwidth Product | 10MHz - supports stable closed-loop operation up to ~1MHz at unity gain with adequate phase margin. |
| Slew Rate | 10V/μs - ensures faithful reproduction of fast audio transients and RF bias step responses without distortion. |
| Output Drive | 200mA peak - directly drives 32Ω headphones or RF power amplifier bias networks without external buffers. |
| Input Offset Voltage | ±6mV max - maintains DC accuracy in precision gain stages and sensor interfaces. |
| Capacitive Load Stability | 780pF - eliminates need for isolation resistors when driving ADC inputs, filters, or long traces. |
| Quiescent Current | 1.1mA at 2.7V - balances performance and battery life in always-on portable audio paths. |
| Operating Temperature | -40°C to +125°C - qualified for automotive cabin and industrial edge-node environments. |
Pinout & Package
The MAX4230AXK-T is supplied in a 5-pin SC70 package (package code X5+1), measuring 2.1mm × 2.0mm with 0.65mm pitch. This ultra-compact outline supports high-density PCB layouts in space-constrained handheld devices.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN+ | Noninverting input - accepts rail-to-rail common-mode signals; input capacitance is 8pF, requiring low-impedance source for >1MHz stability. |
| 2 | VSS | Negative supply terminal - must be connected to ground in single-supply configurations; serves as reference for output swing and shutdown state (not applicable here). |
| 3 | IN− | Inverting input - forms feedback node in standard configurations; shares same rail-to-rail input structure and capacitance as IN+. |
| 4 | OUT | Amplifier output - delivers rail-to-rail voltage swing and 200mA peak current; output impedance <10Ω at DC ensures minimal droop under load. |
| 5 | VDD | Positive supply input - accepts 2.7V–5.5V; requires local 0.1μF ceramic bypass capacitor to minimize supply noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Input common-mode range extends from VSS to VDD; output swings within 360mV of VSS and 500mV of VDD at 32Ω - enables full dynamic range utilization in single-supply 3.3V systems. |
| High-output current | 200mA peak sourcing/sinking capability - eliminates need for discrete output transistors in 32Ω headphone drivers and RF PA bias circuits. |
| Capacitive-load tolerance | Stable with up to 780pF load capacitance at unity gain - simplifies anti-aliasing filter design and eliminates external isolation resistors in data-acquisition front-ends. |
| Low input bias current | 1pA typical - preserves signal integrity in high-impedance sensor amplifiers and photodiode transimpedance stages. |
| Unity-gain stability | Guaranteed stable at AV = 1 with RL ≥ 2kΩ and CL ≤ 780pF - removes risk of oscillation in voltage-follower and buffer applications. |
Applications
| RF PA Biasing in Wireless Handsets | Portable Headphone Driver (32Ω) |
|---|---|
Use Scenario: Biasing the gate/base of RF power amplifiers in GSM/UMTS/LTE handset front-ends to set optimal quiescent current. IC Role / Device Role / Timing Role: Precision voltage-controlled current source providing stable, low-noise DC bias under varying supply and temperature conditions. Use Value: Ensures linear RF output and minimizes spectral regrowth by maintaining tight bias point control across -40°C to +125°C. | Use Scenario: Driving stereo 32Ω earbud transducers from a single 3.3V or 5V supply in smartphones and wearables. IC Role / Device Role / Timing Role: High-slew-rate, rail-to-rail output buffer delivering 60mW/channel with <1% THD+N at 1kHz. Use Value: Eliminates coupling capacitors in bridge-tied load (BTL) configurations, reducing BOM count and PCB area. |
| DAC Output Buffer | Transformer / Line Driver |
Use Scenario: Buffering the output of 16-bit audio DACs in portable media players to drive variable-impedance analog stages. IC Role / Device Role / Timing Role: Low-offset, low-noise voltage follower isolating DAC core from load-dependent settling errors and distortion. Use Value: Preserves DAC resolution with 100dB open-loop gain and 15nV/√Hz input voltage noise at 1kHz. | Use Scenario: Driving balanced audio lines or broadband transformer primaries in professional audio interfaces and telecom line cards. IC Role / Device Role / Timing Role: Wideband, high-output-current driver supporting >1MHz small-signal bandwidth and fast transient response. Use Value: Delivers clean 0.8MHz full-power bandwidth and 10V/μs slew rate to maintain signal fidelity across wide frequency ranges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-output-drive op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4231AXT+T | Includes SHDN pin; 6-pin SC70; 1μA shutdown current; otherwise identical GBWP, slew rate, and output drive. | Required where system-level power sequencing or standby mode mandates active output disable. | Select MAX4231AXT+T only if shutdown functionality is needed; MAX4230AXK-T saves board space and cost when always-on operation suffices. |
| OPA2356AIDBVR | Single 5-pin SOT23; 200MHz GBWP; 360V/μs slew rate; 60mA output drive; lower supply current (3.5mA). | Better for wideband signal conditioning but insufficient for 32Ω headphone or RF PA bias loads. | Choose OPA2356AIDBVR for high-frequency instrumentation; retain MAX4230AXK-T for high-current, rail-to-rail, low-voltage audio/RF bias roles. |
Compared with MAX4231AXT+T, the MAX4230AXK-T offers smaller footprint and no shutdown overhead; versus OPA2356AIDBVR, it provides 3.3× higher output current and rail-to-rail swing at lower supply voltage-critical for portable headset and RF bias designs.
Availability
The MAX4230AXK-T is available at Aetrix Electronics and suitable for RF power amplifier biasing, portable headphone driver circuits, and DAC output buffering requiring stable component supply across automotive (-40°C to +125°C), industrial, and consumer electronics programs.
Supply support for MAX4230AXK-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX4230–MAX4234 family was engineered specifically for high-output-drive, rail-to-rail op amp roles in battery-powered RF and audio subsystems-emphasizing 200mA drive, 10MHz bandwidth, and SC70 packaging for space-constrained handsets.
FAQ
Does the MAX4230AXK-T include a shutdown feature?
No, the MAX4230AXK-T does not include a shutdown pin or function. Shutdown capability is exclusive to the MAX4231 and MAX4233 variants in the family. The MAX4230AXK-T operates continuously when powered and draws 1.1mA per amplifier at 2.7V. This simplifies layout and reduces pin count where system-level power gating is handled externally.
What is the maximum capacitive load the MAX4230AXK-T can drive stably?
According to the datasheet, the MAX4230AXK-T is unity-gain stable with capacitive loads up to 780pF. This specification is verified across temperature and supply voltage and applies to both inverting and noninverting configurations. Exceeding 780pF may cause ringing or oscillation unless an isolation resistor is added in series with the output.
Can the MAX4230AXK-T drive a 32Ω headphone load effectively?
Yes, the MAX4230AXK-T is explicitly optimized for 32Ω headset loads. It delivers 200mA peak output current and guarantees rail-to-rail output swing within 500mV of VDD and 360mV of VSS at 32Ω, enabling 60mW/channel into stereo headphones from a 5V supply. Its 10V/μs slew rate prevents slew-induced distortion on audio transients.
What is the input offset voltage specification for the MAX4230AXK-T?
The MAX4230AXK-T has a maximum input offset voltage of ±6mV at +25°C and ±8mV over the full -40°C to +125°C operating range. This is measured under standard test conditions (VDD = 2.7V, RL = ∞). The offset voltage drift is ±3µV/°C, ensuring predictable DC error accumulation across temperature gradients in bias and sensor applications.
Is the MAX4230AXK-T RoHS-compliant and lead-free?
Yes, the MAX4230AXK-T is RoHS-compliant and lead-free. The "+" symbol in the ordering code (MAX4230AXK+T) explicitly denotes a lead(Pb)-free/RoHS-compliant package, as confirmed in the Ordering Information section of the datasheet. It uses standard SC70 packaging with matte tin lead finish.
MAX4230AXK-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 10V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 50 pA
- Voltage - Input Offset:
- 850 µV
- Current - Supply:
- 1.2mA
- Current - Output / Channel:
- 200 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
MAX4230AXK-T FAQ
1.How can I place an order for MAX4230AXK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4230AXK-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX4230AXK-T reliable?
The price and inventory of MAX4230AXK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4230AXK-T is usually 5 days.
3.What payment methods are accepted for MAX4230AXK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4230AXK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4230AXK-T?
MAX4230AXK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4230AXK-T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX4230AXK-T?
For technical support, including MAX4230AXK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4230AXK-T requirements.
6.How does Aetrix verify that MAX4230AXK-T is sourced from the original manufacturer or authorized distributors?
All MAX4230AXK-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX4230AXK-T meets industry standards.
7.What is the process for return or replacement of MAX4230AXK-T?
All MAX4230AXK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4230AXK-T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX4230AXK-T part is unused and in its original packaging.
Return procedure for MAX4230AXK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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